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Table 4. Meta-analysis of Rate Ratios of Any or Exclusive Breastfeeding, by Timing of Breastfeeding Interventions

Intervention Timing Initiation Short-Term Intermediate-Term Long-Term
Studies, n Rate Ratio(95% CI) Studies, n Rate Ratio(95% CI) Studies, n Rate Ratio(95% CI) Studies, n Rate Ratio(95% CI)
Any breastfeeding
Prenatal 7 1.03 (0.98–1.08) 5 1.37 (1.14–1.64) 1 0.98 (0.83–1.15) 3 0.96 (0.87–1.06)
Postpartum 3 0.97 (0.95–1.00) 6 1.07 (0.98–1.17) 5 0.98 (0.83–1.16) 6 1.25 (0.94–1.66)
Combined 6 1.09 (0.93–1.27) 7 1.09 (0.95–1.24) 5 1.15 (1.01–1.31) 2 1.38 (1.33–1.43)
Exclusive breastfeeding
Prenatal 6 1.03 (0.93–1.14) 3 1.52 (1.22–1.90) 0 – 4 1.27 (0.92–1.75)
Postpartum 3 1.05 (0.96–1.13) 5 1.19 (1.07–1.33) 3 1.03 (0.62–1.70) 2 1.60 (1.10–2.32)
Combined 4 1.18 (0.94–1.47) 9 2.14 (0.95–4.81) 1 5.00 (0.24–102) 5 3.01 (0.93–9.77)

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